A very simple program that I wrote using Java that will ask the user to give a number and then our program will compute it's factorial value using exception handling to check for invalid entries.
I am currently accepting programming and web development work kindly contact me in the following email address for further details. Thank you.
My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.
My telephone number at home here in Bacolod City, Negros Occidental Philippines is +63 (034) 4335675.
Sample Program Output
Program Listing
FactorialNumber.java
package exceptiondemo;
import java.util.Scanner;
import java.util.InputMismatchException;
/**
* NetBeans IDE 8.2
* @author Mr. Jake R. Pomperada
* March 20, 2018 Tuesday
* Bacolod City, Negros Occidental
*/
public class FactorialNumber {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int n, c, fact = 1;
boolean goodData = false;
while(!goodData) {
try {
System.out.print("FACTORIAL NUMBER SOLVER USING EXCEPTION");
System.out.println("\n");
System.out.print("Give a Number : ");
int num_value =sc.nextInt();
if (num_value < 0) {
System.out.println("Number should be non-negative.");
}
else
{
for (c = 1; c <= num_value; c++) {
fact = (fact * c);
}
System.out.println("Factorial value of "
+ num_value +" is "+fact +".");
}
System.out.println("\n");
goodData = true;
} catch(InputMismatchException e) {
sc.next();
System.out.println("You Entered a Bad Data." );
System.out.println("Please Try Again." );
System.out.println("\n");
}
} // while loop end
System.out.print("\t END OF PROGRAM");
System.out.println("\n");
}
}
